Space-block for armatures.



No. 662,928. Patented Dec. 4, I900.

H. GEISENHUNER.

SPACE BLOCK FOB ARMATURES.

(Application filed Jan. 18, 1900.) (No Model.)

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UNITED STATES PATENT OFFICE.

HENRY GEISENI-ICNER, OF SCHENECTADY, NEW YORK, ASSIGNOR TO THE GENERAL ELECTRIC COMPANY, OF NEW YORK.

SPACE-BLOCK FDR ARMATURES.

SPECIFICATION forming partof Letters Patent No. 662,928, dated December 4, 1900. Application filed January 18, 1900. Serial No.1,956. KN'O model.)

To whom it may concern.-

Be it known that I, HENRY GEIsENHoNER, a citizen of the United States, residing at Schenectady, county of Schenectady, State of New York, have invented certain new and useful Improvements in Space-Blocks for Armatures, (Case No. 1,382,) of which the following is a specification.

This invention relates to space-blocks for armatures of dynamo-electric machines or electric motors. It is usual in constructing armatures for generators or motors to provide spaces between groups of the punchings or core-plates which constitute the iron body of the core of the armature in order to promote ventilation and keep down the heating of the armature due to the molecular changes in the iron under its motion in the magnetic field and other causes. The invention can of course be readily applied to any electrical apparatus having alaminated iron structure which requires cooling. My invention is designed to promote such ventilation by a space-block of great simplicity and cheapness of construction and of great rigidity against the pressure to which the core-plates are subjected when being assembled.

In carrying out my invention I provide at the points where ventilation is desired core- 0 plates or punchings of iron, to which I aifix radial iron strips supported edgewise on the core-plates in such a way as to have a firm seat thereon freefrom any tendency to bend sidewise when the bundles of laminae are pressed together. 1 effect this result by pro viding radial slots,with which are connected the space-pieces,which may be secured firmly in place by inserting in the slots and pushing outward radially, the space-pieces being provided with offsets either before or after their insertion, by which they are locked in position. I prefer to mount these space-strips so that they project on both sides of the coreplate, the offsets being so arranged that they 5 will not interfere with the outward flow of air-currents. Both the core-plate and the space-pieces being made from sheet metal, it will be evident that the construction I proyide is a very cheap one, and as they may be inserted or detached by a sliding movement with relation to the slot in the core-plate their assembly or dismounting is an extremely simple matter.

The novel features of myinvention will be hereinafter more specifically described, and will be definitely indicated in the claims.

In theaccompanyingdrawings,which illustrate my invention, Figure 1 is a side elevation of a portion of a core-plate embodying my improvements. Fig. 2 shows detail views of the space-piece employed in the construction shown in Fig. 1. Fig. 3 is a side elevation of a portion of a core-plate provided with a modified form of space-piece, and Fig. 4 shows detail views of the space-piece of Fig.

Referring first to the construction shown in Fig. 1, 1 represents a section of the coreplate, which is a punching of sheet-iron provided with radial slots 2 2, be, which may be punched at the same time that the teeth are out in the core-plate. It will be understood that this core-plate is or may be of the same shape as the laminae which form the body of the armature-core. I provide a spacepiece to be locked in these slots, which may be a simple punching of sheet-iron, such as indicated at 3 in Fig. 2. I preferably punch a slot at the ends and centrally, as indicated in the figures, so that the space-piece maybe locked to the core-plate and project on both sides of the same. The length of the spacepiece should be such as to permit it to be inserted laterally in the slots 2 2, and it should be of such thickness relative to the slot as to permit suchinsertion. After being placed half-way through the slot it may be pushed outward radially, so that the walls 4: 4 at the sides of the slot may engage the two sides of one of the teeth in the core-plate. The two tongues at the rear end of the slot, as shown 0 at 5 5, may then be given a lateral bond, as indicated in Fig. 1, which firmly locks the space-piece in position. Thus it has a firm seat on the core-plate in a true perpendicular direction to the face of said plate and not 5 only affords the necessary separation of ad jacent sections of the core to permit the flow of air-currents, but stiifens the teeth and prevents bending.

I have shown in the drawings only a few of the strips in position. It will be understood, however, that as many as are desired may be provided, and, best of all one for each tooth of the core-plate. Thus when the core-plates are assembled in position between adjoining bundles of lamine in the armaturecore and pressure applied the spacepieces have no tendency to buckle or twist and permit all the pressure to be applied to the core which is needed for its best construction.

In Fig. 3 I have shown a modification in which the slots are provided With enlargements, as indicated at 6 6, on its opposite Walls to cooperate with corresponding lugs stamped in the space-piece. in this construction the space-piece may be punched with a slot at one end only, as indicated at 7 in Fig.

4, lugs, as 8 8, being struck up in the proc ess of punching or in a subsequent operation after the piece has been punched. To seat the space-pieces in the core-plate, the lugs 8 9 are brought into alinement with the enlargements 6 6 of the slot in the core-plate and the space piece then pushed halfway through the core plate, when an outward thrust will cause the tongues at the sides of the slot '7 to pass over the armature-tooth, as indicated in Fig. 3, thus bringing the lugs 8 8 and 9 9 over the metal of the core-plate and firmly locking the space-piece in position. In this organization it is a matter of extreme ease to Withdraw the space-piece after the core of the armature has been disassembled. In the construction shown in Fig. 1 it would be necessary first to bend the tongues 5 5 into alinement with the slot.

The essential feature of my invention is the attachment of the space-pieces to a flat punch- :ing Without the addition of rivets or other e2;- tra pieces of metal. and by a simple sliding movement Which affords a secure mechanical lock and holds the parts in position.

'What I claim as new, and desire to secure by Letters Patent of the United States, is

l. A space-block, comprising a flat coreplatepunched and having secured thereto a space-piece supported on the core-plate edge on and locked thereto by overhanging Walls.

2. A space-block, comprising a flat coreplate punched to receive a space-piece, and

assess a space-piece secured thereto edge on, and locked in position by being pushed over the plate.

A space-block; connn-ising a core-plate punched with radial slots, space-pieces adapted to be inserted into the radial slots, the space-pieces being slotted to permit movement relatively to the core-plate, and locked thereto by the Walls of said slot.

e. A space-block, conngrising a core-plate radially slotted, space-pieces within the slots projecting on both sides of the core-plate and locked thereto by lateral projcctiims.

5. A space-block, comprising: a core-plate, space-pieces extending through radial slots in the core-plate, lateral projections on the space-pieces,and correspondiing enlargements in the slots to permit asselnbliinz, and a slot in the outer end of the space-piece to permit its movement in the radial slot to lock it in position.

6. A space-block, comprising a space-plate and space-pieces secured thereto by integral lateral extensions from the space-pieces at both sides of the plate.

7. A space-block, comprising a space-plate and space-pieces extending thieugh the plate cdgewise, and locked thereto by lateral or;- tensions at both sides of the plate.

8. A space block, comprising a slotted spaceplate, and space-pieces set ednewise in the slots projecting on opposite sides of the plate and locked in place by the slot-walls.

9. space-block composed ofvpunchings of sheet metal and comprising a slotted coreplate and space-pieces set edgewise in the slots and anchored at both sides of the plate.

10. A lamination and a slotted space-piece which spans it.

' 11. A lamina, a slotted SI'MLOG-PlGCG which spans it, and integral lateral extensions from the space-piece on opposite sides of the slot, Which secure the space-{none to the lamina.

In witness whereof I have hereunto set my land this 12th day of January, 1900,

HENRY GEESENHONER.

.Vitnesses:

BENJAMIN HULL, MABEL JACOBSON. 

